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SY87700VHHTR Datasheet(PDF) 11 Page - Micrel Semiconductor |
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SY87700VHHTR Datasheet(HTML) 11 Page - Micrel Semiconductor |
11 / 15 page SY87700V 11 Micrel, Inc. M9999-073008 hbwhelp@micrel.com or (408) 955-1690 28-PIN APPLICATION EXAMPLE 123456 DIVSEL1 VCC RDOUTP 1 2 3 4 5 12 6 11 7 10 8 9 DIVSEL2 RDINP LFIN RDINN VCCA FREQSEL1 REFCLK CD RDOUTN VCCO RCLKP RCLKN FREQSEL2 17 18 19 20 21 22 23 24 25 26 27 28 PLLSP PLLSN N/C FREQSEL3 VCCO TCLKP TCLKN CLKSEL 13 16 GND PLLRP 14 15 GND PLLRN C3 R5 80 Ω 1.5 F GND C4 R6 50‰ 1.0 F VCC VCC GND R2 R1 R3 R4 C9 0.1 F C8 22 F C7 0.1 F C6 22 F Ferrite Bead BLM21A102 FB1 (R17 - R22) 5k Ω x 6 Diode D1 1N4148 C14 0.1 F C15 C16 C17 C18 C19 0.1 F 0.1 F 0.1 F 0.1 F 0.1 F Capacitor Pads (1206 format) RDIN C1 C2 0.1 F C13 14 8 1 7 120 Ω R21 VCC NC REFCLK (TTL) LOOP FILTER NETWORK VCC Stand Off R7 1k Ω XTAL Oscillator If VCC = +3.3V: R9 through R14 = 220 Ω See Table 1 J1 VCC R8 130 Ω LED D2 GND Pin 1 (VCCA) Pin 28 (VCC) Pin 23 (VCCO) Pin 20 (VCCO) C5 C10 C11 C12 0.1 F 0.1 F 0.1 F 0.1 F VCC If VCC = +5V: R9 through R14 = 33 0Ω Ω For AC-Coupling Only when V CC = +5V when V CC = +3.3V C1 = C2 = 0.1 µF C1 = C2 = 0.1 µF R1 = R2 = 1.2k Ω R1 = R2 = 680 Ω R3 = R4 = 3.4k Ω R3 = R4 = 1k Ω Table 1. For DC Mode Only when V CC = +5V when V CC = +3.3V C1 = C2 = Shorted C1 = C2 = Shorted R1 = R2 = 82 Ω R1 = R2 = 130 Ω R3 = R4 = 130 Ω R3 = R4 = 82 Ω Note 1. C5 and C10–C12 are decoupling capacitors and should be kept as close to the power pins as possible. |
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